you are right with a caveat, you can plug them in and listen and decide if you love them or not then if you want to to keep them you will need to support them. People tend not to listen and be lazy. You should not ship a KLF20 or a KLF30 with the mid motor in place either as it is heavy enough to break/snap off from the horn if the box is given a good shake. This is kind of the same with the EV DH 1506. If you don't shake them or drop them or move them not problem but they do need a shelf or a brace or a hangar to hold the motors weight. Great driver the DH 1506, like Bob Seger said "like a rock".